Hello, a question about metadata columns. I was checking that those columns were inserted at the end of the table, now I was checking with version1.8 that were inserted in the beginning. I have another table that has it in the middle. Is not a problem at all, I only have doubt if the behavior is correct.

I don't think there's any strict rule. The general behavior is that they would be added after the original set of columns that the table was created with. However, as new columns appear in the stream, they should automatically get added at the end of the table's column list. This is the only case I can think of which would cause the metadata columns to be in the middle of the column list. There is generally no expectation of column ordering - just that the common sense upstream natural order should be respected unless there's a reason to diverge. That, and any newly added columns can reasonably be expected to be added to the end of a table's column list.

Yeah, its clear. Thanks.